/*
   Copyright 2011 James Bowling

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package com.armedia.dctm.constraints;

import java.util.ArrayList;
import java.util.List;

import com.documentum.com.DfClientX;
import com.documentum.com.IDfClientX;
import com.documentum.fc.client.IDfCollection;
import com.documentum.fc.client.IDfQuery;
import com.documentum.fc.client.IDfSession;
import com.documentum.fc.common.DfException;

public class NotNullAttrsForTypeQuery {
	
	public List<String> execute(IDfSession session, String typeName) throws DfException {
		final List<String> notNullAttributes = new ArrayList<String>();
		String queryPattern = "select attr_name from dmi_dd_attr_info where type_name = '%s' and not_null = true";
		String query = String.format(queryPattern, typeName);
		IDfClientX client = new DfClientX();
		IDfQuery q = client.getQuery();
		q.setDQL(query);
		IDfCollection coll = null;
		try {
			coll = q.execute(session, IDfQuery.READ_QUERY);
			while (coll.next()) {
				String attributeName = coll.getString("attr_name");
				notNullAttributes.add(attributeName);
			}
			
		} finally {
			if (coll != null) {
				coll.close();
				coll = null;
			}
		}
		return notNullAttributes;
	}

}
